diff --git a/Dockerfile b/Dockerfile
index 52f54cc..07d2976 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM debian:stretch-slim
 
 RUN apt-get update && \
-    apt-get -y ffmpeg && \
+    apt-get -y install ffmpeg && \
     rm -rf /var/lib/apt/lists/*
\ No newline at end of file